String roll is not a problem with this light weight peep that comes in 6 sizes. The FLETCHER TRU-PEEP is an all aluminum peep sight that weighs a mere 8 1/2 grains. Its ingenious design allows for a perfectly round, shaded hole at full draw and eliminates the need for protuding hoods. 1. MICRO is a 1/32" hole SMALL is a 3/64" hole LARGE is a 1/16" hole HUNTER is a 1/8" hole SUPER HUNTER is a 3/16" hole MAX HUNTER is a 1/4" hole